Molybdenum tailings acid soil conditioner and production process thereof

Abstract

The invention discloses a molybdenum tailings acid soil conditioner and a production process for the molybdenum tailings acid soil conditioner. The molybdenum tailings acid soil conditioner comprises clinkers and dispersing agents, the clinkers use molybdenum tailings, dolomites and anthracite to serve as raw materials, activated clinkers are obtained through inspection, grinding, material mixing, burning at the temperature of 1150-1350 DEG C and activating, and then the dispersing agents are added to be smashed to be the acid soil conditioner. The molybdenum tailings acid soil conditioner can efficiently, stably and enduringly improve acid soil, simultaneously provides microelement mineral nutrition for weak acid soil, and has advantages of low energy consumption, low cost and low price and the like, wherein the microelement mineral nutrition can be absorbed by crops in balance and are not easy to run off. The production process for the molybdenum tailings acid soil conditioner can sufficiently use valuable resources in molybdenum tailings, achieves decrement discharge of the tailings, lowers environment stress and reduces potential safety hazards.

Description

technical field [0001] The invention relates to a soil improvement preparation and a preparation method thereof, in particular to an acidic soil conditioner made from molybdenum tailings and dolomite and a production process thereof. Background technique [0002] Acidic soil refers to soil with a pH value below 7, including brick red soil, red soil, red soil, yellow soil and dry red soil. In addition to the obstacles to plant growth and development caused by the H+ in the soil, this kind of soil is also accompanied by obstacles such as aluminum toxicity, manganese toxicity under flooding conditions, loss and reduced availability of plant nutrients, especially the lack of trace elements. The existing soil conditioners used to improve acidic soil are divided into two categories: lime and alkaline industrial waste. Although the former has a strong neutralizing function, if it is applied excessively or unevenly, it will cause local calcification, damage soil microorganisms, aff...

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Problems solved by technology

However, the currently applied tailings resource technology is basically filling roadbeds, making bricks and building ceramics, and there are two major problems: one is that only sand and gravel resources with low value are replaced. The tailings of medium and trace elements with a relatively complete variety and high value to crops are difficult to reflect the resource value (taking molybdenum residues from ore dressing as an example, a medium-sized ore concentrator with an annual output of 2000 tons of molybdenum concentrate produces at least 1 million tons of tailings, according to The best level of domestic beneficiation is 0.01% molybdenum content in tailings, at least 100t of molybdenum remains, and the value of micro-fertilizer (150t) such as molybdenum in chemical output is 30 million yuan, and the cost needs to be more than 20 million yuan, as well as iron, copper and zinc , manganese, potassium, silicon, etc.), as sand and gravel use can not reflect its value; second, due to transportation costs and quality reasons, the above-mentioned uses of tailings cannot be accepted by the market, and the actual utilization is very small, reducing the impact on tailings. Little effect on quantification

[0006] The silicate in the crustal rock is the main source of mineral nutrition for plants, but the silicate crystals formed by the slow cooling of magma in nature cannot be directly absorbed and utilized by plants, and need to be weathered into soil through a long geological age to become microcrystalline The essence of the lack of trace elements and mineral nutrients in the soil is the lack of active mineral nutrients

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